8103816 has 72 divisors (see below), whose sum is σ = 25542270. Its totient is φ = 2314368.

The previous prime is 8103811. The next prime is 8103817. The reversal of 8103816 is 6183018.

It can be written as a sum of positive squares in only one way, i.e., 7001316 + 1102500 = 2646^2 + 1050^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 8103816.

It is not an unprimeable number, because it can be changed into a prime (8103811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2380 + ... + 4676.

Almost surely, 2^8103816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8103816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12771135).

8103816 is an abundant number, since it is smaller than the sum of its proper divisors (17438454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8103816 is a wasteful number, since it uses less digits than its factorization.

8103816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323 (or 2309 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 8103816 is about 2846.7202180755. The cubic root of 8103816 is about 200.8614178034.

The spelling of 8103816 in words is "eight million, one hundred three thousand, eight hundred sixteen".